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Old 10-16-2012, 09:56 PM
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Xe274H-10 needs 4.10's for that car.

Xe274 or 12-672-4 cs nostalgia 30-30h+ or Isky 278 mega cam
All these cams will need 4.10's. a 3500 stall is best with all a these.

3.55:1 use a smaller cam .

12-672-4 This cam will be particilarly lame with just 3.55's.
Needs a 3500++4000 stall and 4.30-4.56

You must fully port a vortec heads to see the benefit of a large than stock valve.
Larger valves and full porting will work well.
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